Entries in Optical Illusion (4)

Tuesday
May272014

Animated Ebbinghaus

Check this out, from the always entertaining Richard Wiseman:

Yes, the orange dot stays the same size throughout. 

Incidentally, this and other optical illusions should encourage us to realize how easily 'direct perception' can be fooled. Often times in a philosophical context direct perception is taken to be the most epistemically secure route to gaining knowledge about the world. There is, of course, some truth to that claim. But only some. 

Tuesday
Jan222013

Faces in Peripheral Vision

Here's an eery visual illusion, though it may take you two or three passes to convince yourself that it's real.

It won second prize in the 2012 Illusion of the Year contest. (Who knew?)

Hat tip to Reddit

Tuesday
Apr262011

Amazing Movement Illusion

Click for the full-size version.

Hat tip to Richard Wiseman.

Wednesday
Apr062011

Optical Illusion

Stare at the dot until the bar completes ...

Hat tip to Richard Wiseman.